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3 Sheets-Sheet L '(No Model.)

A. DAUBER. HELIGAL LOADING APPARATUS.

Patented July 8, 18 90.

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. (No Model.) s Sheets-Shet 2.

A. DAUBER. HELIGAL LOADING APPARATUS.

No. 431,650. Patented July 8, 1890.

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(No Model.) 3 Sheets-Sheet 3.

A.. DAUBER.

HELIGAL LOADING APPARATUS.

No. 431,650. I Patented July 8, 1890.

m: NORRIS Penna cc, mqnrumm, WASHINUYON, u c.

UNITED STATES PATENT OFFICE.

AUGUST DAUBER, OF BOCHUM, GERMANY.

HELICAL LOADING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 431,650, dated July 8,1890.

Application filed January 26, 1889. $erial No- 297,74:l- (No model.)Patented in France July 30, 1888. No. 192,106; in Belgium August 6,1888, No. 61,677; in England September 23, 1888, No. 11,946, and inGermany November 1 1 No. D, 3,516.

To all whom it may concern.-

Be it known that 1, AUGUST DAUBER, merchant, subject of the Emperor ofGermany, and resident of Bochum, Province of WVestphalia, have inventeda new and useful Improvement in a Helical LoadingApparatus forBriquettes, Coal, and other Goods on Board Steamers and in WVarehouses,(for which I have received Letters Patent in France, No. 192,106, datedJuly 30, 1888, in Belgium, No. 61,677, dated August 6, 1888; in England,No. 11,946, dated September 23, 18S8,-and,in Germany, No. D, 3,516,published November 19, 1.888;) and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to make use of the same. 7

The means provided for loading coal on board ship and for bringing itdown in the lower compartments (the coal-bunkers of a steamer,) consistof an open cylindrical shaft, through which the coal is thrown down, andwhich also serves for ventilating purposes. The height through which thecoal thus falls is rather considerable, and therefore a comparativelylarge quantity of coal is broken and turned into dust and shingle andthus loses in quality as a combustible. Briquettes could not stand sucha rough treatment, and therefore, they must be excluded from the use onboard steamers or else they must be loaded in some other manner, which,of course, again increases the expense, for which reason this artificialfuel is not used as much as it deserves, notwithstanding its evaporatingquality makes it highly applicable as fuel for boilers, and by theirform briquettes recommend themselves better for being stored on boardsteamers than any other sort of fuel.

Now, in order to facilitate the loading of briquettes so that they canbe loaded without requiring any special care and without being exposedto the danger of being broken, I have invented the helical loadingapparatus shown in the accompanying drawings and described hereinafter.

I beg to observe that the apparatus is adapted as well for loading allother goods requiring careful treatment in having to be brought fromhigher compartments to a place lower down.

In the drawings, Figure 1 is a vertical section through the helicalloading apparatus; Fig. 2, ahorizontal section; Fig. 3, an outside viewof part of the arrangement with an outlet door and a discharge orsloping plane in enlarged scale; Fig. 4, a horizontal section throughFig. 3; Fig. 5, a vertical section through Fig. 3, showing the doorshut.Fig. 6 is a vertical section through Fig. 3, showing the door open.Figs. 7 to 11 show details of construction. Fig. 12 is a side view ofthe device.

My helical loading apparatus consists of a shaft or hollow cylinder A oftwenty-four to thirty inches in diameter, more or less, as may bedesired, and of an inner cylindrical core B. Into the annular space thusformed between the two cylindersA and B, I place ina convenient mannerthe screw 0, running from the top to the bottom. The pitch or the angleof inclination of this screw is such that this angle is a little largerthan the angle of friction of the goods to be loaded by means of thehelical loading apparatus.

At the top the screw-surface adjoins a sort of a table or a jetty on thedeck of the vessel on which the briquettes are stored and from whichthey are simply pushed into the shaft, and then they glide down thescrew-surface at a comparatively high speed and reach the bottom ortheir place of destination without being broken, the inside surfaces ofthe screw and of the cylinder being all smooth.

The screw is made of several single pieces ranged together, as shown byFig. 10, and lying at the sides on angle-irons which support them, asshown by Figs. 1, 5, and 6, so that they can be taken to pieces easilyand withdrawn from the shaft, that this may serve for ventilatingpurposes, as usual.

In order to be able to take out briquettes or other goods at variousplaces from the shaft and at various heights, I arrange in such placesthe inclined planes D, which form the tangential continuation of thescrew, and upon which the goods coming down in the shaft are carriedfurther to the places desired. At

those places I make doors E in the circum-n ference of the cylinder A,which can be drawn up and down for being opened and closed. With thesedoors there are connected diaphragms F let into the screw-s11 rface andforming by their top part of the screw when the doors are shut, butstopping the continuity of the screw or crossing the passage when thedoors are opened and pulled upward. These diaphragms are also soarranged that they form the tangent to the inner cylinder 13, and thebriquettes, 850., coming down in the shaft in their spiral way, which,by nature, have the tendency to go off in a-tangential direction, willfollow willingly the direction given them by the diaphragm withoutstriking against it or being thrust against it, and since all adjoiningsurfaces are quite smooth and flat, the briquettes are not hurt by anyshocks, and even the most fragile goods can thus be loaded. and broughtquickly from the deck of vessels to the lower compartments by means ofmy helical loading apparatus.

The sloping or inclined planes D can be provided with an endless web andmovable rollers, as shown by Figs. 1 and 2, at the bottom on the rightside,in which case the slope of the plane need not absolutely be steeperthan the angle of friction of the goods to be loaded. It may even beless.

I am aware that loading arrangements based on the use of an Archimedeanscrew have been used before, and I therefore do not claim such a designbroadly; but

WVhat I do claim as myinvention, and desire to secure by Letters Patent,is

An apparatus for loading coal, briquettes, and other goods of a fragilenature from the deck of steamers into the coal-bunkers and lowercompartments, or for bringing such goods from the upper localities inwarehouses to lower ones, the same consisting of a cylindrical casing A,an internal cylinder B, and a screw-shaped 'guideway O, laid in theannular space between the cylindrical casing A and cylinder B, thecasing being provided at various places with outlet-doors E, and withsloping planes D, adjoining the screw-shaped guideway and the outercylindrical casing in a tangential direction, and in combination withthe doors E, diaphragms F, crossing the screw-shaped guideway in a lineforming the tangent to the inner cylinder B, and being so arranged thatwhen the doors are opened they direct the goods to the outlet, and whenthe doors are closed the diaphragms are sunk below the screw, their topforming part of the surface of the latter. I

In testimony that I claim the foregoing as my invention, I have signedmy name in presence of two witnesses this 6th day of December, 1888.

AUGUST DAUBER.

Witnesses:

OTTO BEHRIscH,

TUL. FRIEDRICI-IS.

